42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
#ifndef LUCKY_STRATEGY_H
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#define LUCKY_STRATEGY_H
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#include "MelodyStrategy.h"
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#include <Arduino.h>
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class LuckyStrategy : public MelodyStrategy {
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public:
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void generate(Step* sequence, int numSteps, int* scaleNotes, int numScaleNotes, int seed) override {
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randomSeed(seed);
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if (numScaleNotes == 0) return;
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for (int i = 0; i < numSteps; i++) {
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int octave = random(3) + 3; // 3, 4, 5 (Base is 4)
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sequence[i].note = (random(100) < 50) ? (12 * octave + scaleNotes[random(numScaleNotes)]) : -1;
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sequence[i].accent = (random(100) < 30);
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sequence[i].tie = (random(100) < 20);
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}
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randomSeed(micros());
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}
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void mutate(Step* sequence, int numSteps, int* scaleNotes, int numScaleNotes) override {
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// Mutate 1 or 2 steps
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int count = random(1, 3);
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for (int i = 0; i < count; i++) {
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int s = random(numSteps);
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if (sequence[s].note != -1) {
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int r = random(100);
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if (r < 30) sequence[s].accent = !sequence[s].accent;
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else if (r < 60) sequence[s].tie = !sequence[s].tie;
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else if (r < 80) sequence[s].note += 12; // Up octave
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else sequence[s].note -= 12; // Down octave
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}
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}
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}
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const char* getName() override {
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return "Lucky";
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}
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};
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#endif |